Picnic table



FIG. 1 is a perspective view of a picnic table;

FIG. 2 is a front view thereof, the back view being identical;

FIG. 3 is a left side view thereof, the right side being identical;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom view thereof.

The broken lines shown in the drawings are included for purposes of illustrating portions of the picnic table and form no part of the claimed design. 

CLAIM The ornamental design for a picnic table, as shown and described. 